27590639 free siemens nx unigraphics tutorial surface modeling

Intellectual Technology LimitedProvide Expertise to Siemens NX Users in China and Hong KongSiemens NX 6 Surface Modeling - Mouse

Siemens NX 6 Surface-modeling (Tutorial 2 Mouse)

Surface-modelingSolid-modelingAssembly DesignDesign with a Master ModelDesign in Context

Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 1


Tutorial 2A - Import 2D outline drawing into Siemens NX 6- Build 3D curves based on the imported drawing- Build the upper surfaces of the mouse

Tutorial 2B - Do the draft analysis to search any undercut portion on the upper surfaces- Build the lower surfaces of the mouse- Convert the surfaces into a solid (Master Model)

Tutorial 2C- Build the parting surfaces based on the imported drawing - Create components from the finished model- Create a new part in the assembly (Design in Context)- Modify a part design while looking at other parts (Design in Context)

Please be reminded that this series of tutorials is designed to demonstrate a design approach with Siemens NX, rather than the command itself. For the details of commands, please read the online help or attend the software training.



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Tutorial 2A Create a new project folder (e.g.

C:\projects\mouse) and copy the drawing file (mouse_outline_b.dxf) into the folder

Enter Siemens NX 6 by double-clicking its icon on the desktop

Select Roles Essential with full Menus, then click ok

File/New

Select Model as Type

Enter master_model_a.prt as file name

Select the path of the project folder

Click ok


Lets Start!


Tutorial 2A Double-click on the default Datum

coordinates system

Select Absolute CSYS as type

Click ok

To Import the outline drawing:-

File/Import/DXF

Select the file mouse_outline_b.dxf

Select WORK as Import to Part

Click ok

(the imported curves will be pasted on the XY plane)


Double-click to edit


Tutorial 2ATo confirm that the size of the drawing is correct:-

Double-click on the scale line of the drawing

Check if the displayed length is 50mm; if not, we need to enlarge or shrink the drawing into the correct size

Delete the scale line ( we dont need it anymore)

To Reposition the 3 views (offset from absolute datum by 150mm):-

Edit/Move Objects

Select all the curves of Top View

Select Move Handle Only

Drag the handle to the midpoint of the arc

Deselect move handle only

Select Move Original

Enter x =0. y=0, z=150

then rotate about z by 90deg (clockwise)

Click Apply


Handle (free to move)


Tutorial 2A Select all curves of Front View Select Move Handles Only Draft the handle to the midpoint of the line Deselect move handles only Enter x =0, y= -150, z=0 Then rotate about x by 90deg (as shown ) Click apply

Select all curves of Right View Select Move Handles Only Draft the handle to the endpoint of the line

Deselect move handles only Enter x =150, y= 2.85, z=0 Then rotate about x by 90deg (as shown ) Rotate about z by 90deg (as shown ) Click ok to complete


Result

Top View

Right View

Front View


Tutorial 2ATo Change all curve colors to Yellow:-

Select all curves

Right-click on a curve, select edit display

Select Yellow as Color

Click ok

To Move all curves to a layer99:-

Select all curves

Select Format/ Move to Layer

Enter 99

Click ok

To make all layers Invisible, except layer 1, 61&99:-

Format/Layer Settings

UnTick all layers, except 1, 61, & 99

Select visible only for layer99

Click close


unTick


Tutorial 2A Insert Datum/Datum plane

Select xy plane

Distance 50mm

Click ok

Insert/Sketch

Select the offset plane

Click ok

Draw a point as shown

Mirror the point around y axis

Draw a 3-point arc (start & end at the existing points, middle at the origin)

Drag the endpoint to make it longer

(the arc should match the reference)

Click icon Finish Sketch


Draw a point here

Mirrored point


Tutorial 2A Insert Datum/Datum plane

Select xz plane

Reverse Direction

Distance 50mm

Click ok

Insert/Sketch

Select the offset plane

Click ok


Mirror the point around z axis

Draw a 3-point arc (start & end at the existing points, middle on the yellow arc)

Drag on the curve to adjust radius

Drag an endpoint to make it longer



drag

drag


Tutorial 2ATo build a 3d curve by combined projection :-

Insert/ Curve from Curves/ Combined Projection

Select sketch.0 as curve.1

Select sketch.1 as curve.2

(projection direction = normal to curve)

Click ok

Hide Sketch.0 & Sketch.1 (right-click, select hide)

Hide Plane1 & Plane2

(This combined curve can fit the shapes of both top view and front view)


Sketch.0

Sketch.1


Tutorial 2A Insert/Datum/Datum plane Select yz plane Switch to Top View Drag the plane onto the plane (we can drag

the green ball to make the plane bigger) (offset value = 30.5) Click ok

Insert/Sketch Select the offset plane, click ok Draw two arcs (tangent to each other) Click icon Constraints Select the end point and the absolute y axis Select point on curve (the endpoint is now

on y-axis) Adjust the shape & position of the arcs so that

they can match the yellow reference Click icon finish sketch


drag


Tutorial 2ATo Create an extruded surface:-

Insert/Design Feature/Extrude

Select the combined curve as Section

Select +Z as the direction

Enter 20 mm as distance

Click ok

To Create a Draft 5 deg (from parting line):-

Insert/Detail Feature/Draft

Select From Edges as type

Select +Z as Draw Direction

Select the lower edge

Enter 5 deg as Angle 1

Click ok



Tutorial 2ATo Create an extruded surface with Draft:-


Select Sketch.2 as Section

Select +Z as the direction

Enter 20 mm as distance

Select From Start Limit as Draft

Enter 5 deg as Angle

Click ok

To Mirror a surface:-

Insert/Associative Copy/Mirror Body

Select this surface as body

Select yz plane as mirror plane

Click ok


result


Tutorial 2A Insert/Detailed Feature/Face Blend

Select surface as Chain1


(Both arrows should point inward; if not, reverse it)

Enter 5mm as Radius

Select Trim to all input faces

Click ok

Repeat the above steps for the opposite side


result


Tutorial 2A Hide Datum.3

Insert/Sketch

Select XZ plane, click ok

Insert/ Curve from Curves/Offset from curve

Select the combined curve

3.5 mm as offset value

Click ok

(We can create an offset curve from any entity that is out of the sketch.)




Tutorial 2ATo create a sketch mating with an external sketch:-

Insert/Sketch

Select yz plane

Draw two arcs as shown (tangent to each other)

Draw a horizontal line starting from the connecting point , then make either one tangent to it; Convert the line to a reference line

Create an intersection point on the offset curve (Insert/Curve-from-curves/intersection point)

Make a Point on curve constraint

Adjust the shape & position of the arcs so that they can match the yellow reference (just dragon curves or points)

Click icon finish sketch


Offset curve

Horizontal line(reference)

Coincided with y axis


Tutorial 2A Insert/Datum/Datum plane

Select XZ plane

Select the endpoint

Select Associative

Click ok

Insert/Sketch

Select the offset plane, click ok


Mirror the point around Z axis

Draw a 3-point arc (start & end at the two points, middle at the point )

Drag on the curve to adjust radius

Drag the endpoint to make it longer




Tutorial 2ATo Create a Swept surface ( 1section & 2

guides):-

Insert/Sweep/Swept

Select Single Curve on selection filter

Select Curve as Section

Select Curve as Guide 1

Click Add new set

Select Curve as Guide 2

Click ok

Insert/Trim/Trim-and-Extend

Select Make Corner as type

Select a surface as Target

Select the other surface as Tool

Reverse arrows so that the result is as shown

Click ok



Tutorial 2A Insert/Trim/Trim body

Select the surface as Target

Select Plane as Tool

(arrow should point backward; if not, reverse it)

Click ok

Insert/Detail-Feature/Edge Blend

Select an edge (all tangent edges are selected automatically; selection filter = tangent curves)

Specify four points as variable radius points

Enter values as shown

Click ok


7mm

7mm

3mm

3mm


Tutorial 2A Draw one horizontal line at point

(Insert/Curve/Line , select associative)

Draw one vertical line at point

Insert/ Curve-from-Curves/Bridge

Select horizontal line as start object

Select vertical line as end object

Select G1 (tangent) as start

Select G1 (tangent) as end

Select Associative

Orient View to Top View

Drag the arrows to match the yellow reference

Click ok



Tutorial 2A Insert/Curve-from-Curves/Mirror Select the bridge curve as Curve Select YZ plane as Mirror Plane Click ok

Insert/Curve-from-Curves/Mirror Select Sketch.3 as curve Select YZ plane as mirror plane Click ok

Hide Sketch.6

Insert/Mesh Surface/Through-Curve-Mesh Select Primary Curve 1 &2 Select Cross Curve 1 , 2 & 3 (Refer to next page) Select G1 tangent as first primary

continuity, select the surface Click ok


Sketch.6


Tutorial 2A


2 Primary Curves

Primary curve1

Primary curve 2

Selection filter = Tangent curvesSelect an edge of Primary curve1Add New Set

Selection filter = Single CurvesSelect the two arcs of Primary curve 2(Arrow direction same as Curve1)Add New set

3 Cross Curves

File/Save


Tutorial 2A


To Check if the whole skin can meet the required shape

Orient view to Top View

Check

Orient view to Front View

Check

Orient view to Right View

Check

File/ Save

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Tutorial 2B Insert/Sketch

Select Plane.1 , click ok

Draw a vertical line, then mirror it

Draw two arcs (tangent to lines)


Insert/Trim/Trimmed-Sheet

Select the surface as Target

Select the last sketch as Boundary Object

Normal to Curve Plane

Click ok



Tutorial 2B Insert/Mesh Surface/Sections

Select Two Point Radius as Type

Select Start guide

Select End guide

Select Spine curve

Law type = Constant

Value = 5mm

Click ok

Insert/Mesh surface/Through Curves

Select section1

Select section2

Select G2 curvature as First section continuity

Select the last surface

Select G0 curvature as last section continuity

Flow direction = Perpendicular

Click ok

Repeat the above steps to close another opening



Tutorial 2B Insert/ Combine Bodies/ Sew

Select the biggest surface as Target

Select other surfaces as Tool

Click ok

Analysis/Shape/Draft

Change draft angle to 3 deg

An error is found (not enough 3 deg)

Double-click the line

Add 10 deg

The bridge curve will be updated (if it is associative)

(If you forgot to make the bridge curve associative, double-click to edit, drag the end point out and snap onto the endpoint of the line again, select G2.)

Do Draft analysis again to see if the error is corrected.


undercut


Tutorial 2BWe are going to build a lower skin


Select the curve

Enter -20mm as End Limit distance

Click ok

Insert/Design Feature/Draft

Select From edges as type

Select +z as Draw Direction

Select the top edge

Orient View to Right View

Drag the draft angle to 10 deg (to match the Yellow reference)

Click ok


drag


Tutorial 2B Insert/Flange Surface/Law Extension

Select the sketch as base profile

Select Z as reference vector

Length law = constant, 30mm

Select Linear as Angle Law type

Start = 10 deg, End = 2 deg

Click ok

Insert/Associative Copy/Mirror Body

Select the surface

Select yz plane as mirror plane

Click ok


start

end


Tutorial 2B Insert/Detail Feature/Face Blend



(Both arrows should point inward; if not, reverse it)

Enter 4.5mm as Radius

Select Trim to all input faces

Click ok

Repeat the above steps for the opposite side



Tutorial 2B Insert/Curve/Line

Select the origin as start point

Select any point on x-axis

Enter -50mm as start limit

Enter 50 mm as end limit

Click ok


Select the line as section

Select y as direction

Drag the handle to define the length, longer than the model

Click ok

Insert/Combine Bodies/Sew

Select all surfaces, except the last extruded surface

Click ok



Tutorial 2B Insert/Trim/Trim-and-Extend


Select Target surface

Select Tool surface


Click ok

To check if the solid can be created:-

Right-click Name, deselect Timestamp order

One Sheet Body is found, but not a solid!



Tutorial 2BTo find out the surface gaps that lead to the

failure of surface-to-solid conversion:-

Insert/Offset-Scale/Sheets-to-Solid-assistant

Enter 0mm as First Offset & Second Offset

Select the surface

Click Apply

Select Show Sheet Boundary (two gaps are found)

Click Cancel

Right-click Name, select Timestamp order

Double-click to edit the last SEW feature on tree

Increase Tolerance from 0.025 to 0.05

Click ok (Now a solid can be created)



Tutorial 2B Insert/ Design Feature/Edge Blend Select the edge Enter 1mm as radius Click ok

Insert/Offset-Scale/Shell Select Shell all Faces as type Select the solid (arrow should point inward) Enter 2.5mm as thickness Click ok

Show all sketches/curves/ datums

Move all sketches/curves to Layer 41 Move all offset datum planes to Layer 61

File/Save


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Try it Now!


Tutorial 2CWeve built the overall shape of the mouse. Now, we

are going to create parting surfaces, and then split the master model into separate components.

Check Top View

Check Front View

Check Right View

(the model should match the three reference views)



Tutorial 2C Make Layer 41 visible

Insert/Sweep/ Swept

Select Section curve

Select Guide curve

Select Anywhere along guide as section location

Click ok


Select the two surface edges

Select +z value as direction

Enter 3 mm as start limit, -10mm as end limit

Click ok

Insert/Offset Scale/Offset Face

Select the extrude surface

Enter 2.5mm as offset (arrow pointing inward)

Click ok


guide

section


Tutorial 2C Insert/Trim/Trim-and-Extend

Select By Distance as type

Select the surface edges

Enter 10mm as extension

Click ok

Hide the solid body

Draw a line (from point to point); select associative

Insert/Mesh Surface/N-sided Surface

Select the line & the edges

Click ok



Tutorial 2C Insert/Trim/Trim-and-Extend

Select the surface edge

Enter 20mm as extension

Click ok

Insert/Combine Bodies/Sew

Select the two surfaces

Click ok

Insert/Trim/Trim-and-Extend


Select Target surface

Select Tool surface


Click ok


result


Tutorial 2C Insert/Sketch

Select Datum plane1 on tree,

click ok

Draw a symmetrical arc as shown



Select the sketch

Reverse Direction

Enter 80mm as distance , click ok.

Create a sketch on Datum plane 1

Create an extrude surface (80mm downward)



Tutorial 2C Show the Solid

Format/Layer settings

Make layer 41 (curves) invisible

Make layer 61 (datums) invisible

Select all remaining curves/sketches

Format/Move to Layer

Move them to layer 42

File Save

File/New/Assembly

Enter Mouse_assembly_a.prt as file name; in the same project folder

Click ok

Select master_model_a.prt on the list

Select Absolute Origin as Positioning



Tutorial 2CWe are going to split the Master Model into

separate parts (part files)

The outlook of the mouse is controlled by the Master Model. If we make any change on it, the linked parts will be updated automatically. Also, because all components are created from one model, their surfaces & boundaries can always match among themselves when assembled together.


With Link


Tutorial 2CTo Create Upper Body:-

Assemblies/Components/Create New Component

Select model as type

Enter upper_body_a.prt as filename

Click ok, click ok

Double-click Upper_body on tree (Jump into part level from assembly level)

Insert/Associative Copy/WAVE geometry linker

Select the solid & three surfaces

Click ok

Hide master model (untick it on tree)

Insert/Trim/Trim Body (3 times) to get this shape

Move all surfaces to Layer 11

Hide all layers except layer 1



Tutorial 2CTo Create Right Button:-

Double-click mouse_assembly (Jump into assembly level from part level)

Hide (unTick on tree) Upper Body

Show (Tick on tree) mastermodel

Create a new component (refer to previous steps)

Enter right_button_a.prt as filename

Copy the solid & parting surfaces from master model

Hide mastermodel

Create an Offset Surface (one face only) (0.5mm)

Offset face (1mm, forward)

Offset face (1mm, upward)

Do 3 Trims




Tutorial 2CTo Create Left Button:-

Double-click mouse_assembly Hide other component Show mastermodel

Create a new component Enter left_button_a.prt as filename Copy the solid & parting surfaces from

master model Hide mastermodel

Offset Surface (one face only) (0.5mm) Offset face (1mm) Offset face (1mm)

Do 3 Trims Move all surfaces to Layer 11



Tutorial 2CTo Create Middle Button:-

Double-click mouse_assembly

Hide other component

Show mastermodel

Create a new component

Enter middle_button_a.prt as filename


Hide mastermodel

Do 2 trims




Tutorial 2CTo Create Lower Body:-

Double-click mouse_assembly

Hide other component

Show mastermodel

Create a new component

Save it as middle_button_a.prt


Hide mastermodel

Offset face (0.5mm, downward)

Trim body




Tutorial 2CTo Create a Wheel (New Part):-

Double-click mouse_assembly Show all components, except mastermodel

Create a new component Enter wheel_a.prt as filename

Double-click wheel_a Insert/Sketch Select yz plane (zoom in to view), click ok Draw a circle at origin (dia 20mm ) Click finish sketch

Insert/Design feature/Extrude Select the sketch Enter 3mm as start, -3mm as end Click ok

Add Edge Blends 2mm Move sketch to layer 21



Tutorial 2C Double-click mouse_assembly

Assemblies/Components/Move component

Select Wheel model

Click specify orientation on the command menu

Drag the wheel to the correct position

Switch to top view, the wheel is nearly in the middle of the slot

Switch to right view, the wheel position is roughly as shown



Tutorial 2C

Double-click middle_button_a

Insert/Sketch Select xy plane Draw a profile slightly bigger than the

wheel Click icon finish sketch

Insert/Design Feature/Extrude Select the sketch Select symmetric value as limits Enter 100mm Select Subtract, select the solid Click ok

Double-click mouse_assembly on tree

File/Save allVersion 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 51

Design in Context make a design change while looking at other parts


Tutorial 2C Click tab page System materials on the

left Apply material texture one by one (just

drag and drop) Upperbody, leftbutton & rightbutton

(aluminium) Middle button & wheel (plastic black) Lowerbody (plastic shiny resin red)

Double-click any material on list, then we can see Materials in part

Edit Plastic Black, change roughness to 0.05

View/Perspective

View/Visualization/High-Quality-Image Click icon basic scene editor Deselect Use Image based lighting Start Shade, then save it as tif

Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 52Finished! Well Done!

Drag & drop

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27590639 free siemens nx unigraphics tutorial surface modeling

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